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    <meta charset="UTF-8">
    <title>Document</title>
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    <h1>这是一级标题</h1><br/>
    <p>--what are you doing?<br/>--play game.</p>
    <hr/>
    <!--有序和无序列表-->
    <ol>
        <li>ABC</li>
        <li>DEF</li>
        <li>XYZ</li>
        <hr/>
        <ul>
            <li>ABC</li>
            <li>DEF</li>
            <li>XYZ</li>
        </ul>
    </ol>
    <!--超链接标签-->
    <a href="https://www.bing.com" target="_blank">bing</a>
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